#[macro_use] extern crate diesel; #[macro_use] extern crate diesel_codegen; extern crate openssl_sys; use diesel::pg::PgConnection; use diesel::prelude::*; use std::env; table! { users (id) { id -> Integer, name -> Text, } } #[derive(Debug, Insertable, Queryable)] #[table_name="users"] struct User { id: i32, name: String, } fn main() { println!("Hello, world!"); // Only run our database example if we have a database. Otherwise, we just // want to make sure everything links correctly. if let Ok(url) = env::var("DATABASE_URL") { let conn = PgConnection::establish(&url) .expect("could not connect to site"); let rows = users::table .limit(5) .load::(&conn) .expect("could not load users"); for row in rows { println!("{:?}", row); } } else { println!("No DATABASE_URL set, so doing nothing") } }